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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
The electron cannot exist inside the nucleus because:
  • A
    de$-$Broglie wavelength associated with electron in $\beta -$decay is much less than the size of nucleus
  • ✓
    de$-$Broglie wavelength associated with electron in $\beta -$decay is much greater than the size of nucleus
  • C
    de$-$Broglie wavelength associated with electron in $\beta-$ decay is equal to the size of nucleus
  • D
    de$-$Broglie negative charge cannot exist in the nucleus
✓

Answer

Correct option: B.
de$-$Broglie wavelength associated with electron in $\beta -$decay is much greater than the size of nucleus

$\beta−$decay:
$\beta−$ radioactivity occurs when a nucleus emits a negative electron from an unstable radioactive nucleus whose deBroglie wavelength of order $\text{MeV}$ is much larger than nuclear dimensions.

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